scubaseason

Whitetip Reef Shark

Triaenodon obesus

Sighting evidence at Shark Island, Kosrae

Whitetip Reef Shark

Photo: Craig Fujii · CC BY-NC-ND

Whitetip reef sharks rest in stacks under the pinnacle's overhangs during the day, packed into crevices with their heads pointing outward in the characteristic resting posture that gave this species its reputation as the 'lazy' reef shark. After dusk they become the dominant nocturnal predator on the reef, using their slender bodies to pursue fish into coral crevices that larger sharks cannot access. Daytime divers routinely find three to eight resting whitetips at depth on the pinnacle's shaded northern face.

Evidence at this site

No confirmed records on file at this site

Whitetip Reef Shark is listed as a curated species here based on historical reports.

How is this calculated?

Sighting evidence is compiled from iNaturalist observation records within a set proximity radius, filtered for quality-grade observations. “Last confirmed” is the date of the most recent research-grade record. Record count covers a rolling 24-month window. Confidence reflects record count, recency, and consistency of seasonal signal.

Also seen at other sites